Jessica Biel Flees Stella McCartney Front Row

One minute she was posing and vamping for pictures in a sexy minidress. But three minutes into Stella McCartney’s show at the Palais de Chaillot in Paris today, Jessica Biel was escorted from the designer’s front row – something never done at catwalk shows, which don’t last more than 15 to 20 minutes. A spokeswoman for McCartney told PEOPLE that Biel was jetlagged — the 24-year-old actress arrived in Paris from Los Angeles yesterday morning. But backstage, rumors flew that Biel was actually taken ill, as she did not reappear after she left the show. Lily Allen, the British singer who sat next to McCartney’s husband Alisdhair Willis in the front row, did manage to stay for the whole show, which included supermodels Daria Werbowy and Jessica Stam — and lots of black and gray woolly cardigans and big hooded anoraks paired with miniskirts.